User interface for a portion of a display screen



FIG. 1 is a front view of a user interface for a portion of a displayscreen showing my new design; and,

FIG. 2 is an enlarged view of the shaded region in FIG. 1.

The broken line showing of various regions and the unshaded areas therewithin form no part of the claimed design. The broken line showing ofthe display screen is for illustrative purposes only and forms no partof the claimed design.

The ornamental design for a user interface for a portion of a displayscreen, as shown and described.